A fatigue score is a measure of fatigue
experienced by a worker. The fatigue
score is based on:
The time of day of work and breaks
The duration of work and breaks
The work history over the last
seven days (this is weighted so
that the most recent days provide
the most input)
The biological limits on recovery
of sleep (basically, this acknowledges
that you can't bank up sleep.
That is, there there is only a
certain amount of sleep that can
be obtained in a break of certain
duration at a certain time of
day.)
InterDynamics Pty Ltd develops and
distributes a range of animated management
tools known as InterDynes, which are
developed using its proprietary software
called Planimate.
FAID makes provision for the user to
enter and compare results from two
work schedules. Results for hours
worked when exceeding the set Fatigue
Tolerance Level (FTL), Peak FAID Scores,
and more, are determined and presented
both graphically and in tables together
with summary distribution of results.
There is one task/shift/rostered activity
record per line containing four fields
of information (ID#, Start, End, Task
Risk):
ID# is a number used to identify
an employee or planned sequence
of shifts ("line of work")
Start and End are the date and
time of the task - FAID writes
these in "dd mmm yyyy hhmm"
format but is quite versatile
in interpreting (reading) most
common date/time formats
Task Risk must be one of "Low",
"Moderate", "High"
or "Extreme"
For example:
1,1 Nov 2007 0900,1 Nov 2007 1730,Moderate
1,2 Nov 2007 0900,2 Nov 2007 1730,Low
It is important to remember that the
fatigue calculation requires a week
of history to determine a fatigue
score. Therefore if you wish to analyse
a week of rostered activity, data
from two weeks must be supplied. The
first week will be used as history
for the beginning of the week to be
analysed and no results for the first
week will be provided.
Save your file in the FAID working
folder and give it a descriptive file
name with an ".rtr" extension.
From the Roster 1 or Roster 2 input
screen press the "Read Roster
from file" button and select
the file.
I am having
trouble entering and manipulating
data for importing, what do you recommend?
Spreadsheets are a good way to assemble
a lot of data and provide the ability
to manipulate shifts. Below is an
example of how to use the 'Quick Roster'
spreadsheet. This is available in
the downloads
section.
By using the FAID column names (ID#,
Start, End, Task Risk) along with
some additional columns (Day, Shift
Length, Time To Next Shift [Days,
Time] ) you can enter one date in
the first Start shift and the rest
can be calculations with references,
numbers and times.
To start, enter the first Start
date (example: E5).
For the shift (row) enter the
Task Risk, Shift Length (HH:MM)
and Time To Next Shift (Days and/or
Time).
Next, the cell containing the
End date will have the calculation:
= Start cell + corresponding Shift
Length.
( F5 = +E5 + I5 )
Then, the following Start Date
will have the calculation:
= previous End Time To Next Shift
[ Days ] and [ Time ]
( E6 = +F5 +K5 +L5 )
5) Go back to (2) and repeat for as
many shifts necessary.
6) When finished, copy to the clipboard
the data under the FAID column names
(ID#, Start, End, Task Risk)
7) Then, return to FAID and in Inputs
- Roster 1(or 2) paste from clipboard.
You now have the ability to manipulate
a roster by changing the Shift Length
and Time to Next Shift data on the
spreadsheet.
You can download
a prepared setup file called QuickRoster
(in Excel format).
For assessing the risks in your operations
there is a Risk Management Australian/New
Zealand Standard AS/NZ 4360 standard
that provides a comprehensive guide
to risk management. It includes a
qualitative risk analysis matrix and
uses a combination of the magnitude
of the consequence and the likelihood
of the event, which are allocated
a qualitative measure of high risk,
moderate risk and low risk.
This process is also available via
the Faid®Safe Module
Two, and the Hazaid®
hazard analysis software can be used
to support Fatigue Hazard Scenario
Analysis and Risk Assessment.
Should I
include Short Breaks when entering
Work Times?
It has come to our attention that organisations
have been including short breaks (45
mins) when inputting work hours into
FAID for analysis. For example, an
eleven hour shift, is broken into
blocks of 4 / 2 / 1.5 / 1.25 hours
of work with 45 minute breaks in between.
Thus, the individual has been inputted
to have only worked 8.75 hours, and
subsequently a lower Peak Fatigue
Score is produced, than if they had
been inputted as a whole eleven hour
shift.
Overall, the inclusion of breaks that
are less than 1 hour is not sufficient
to include as an opportunity for an
individual to obtain recovery sleep.
If there is adequate surroundings provided
by the organisation for an individual
to rest; e.g. a quiet, dark room,
with sleeping facilities, and a long
enough break is provided for the purpose
of rest, then it may be appropriate
to split a shift into work, short-break,
work periods.
In the case of no adequate opportunity
for sleep provided, then it is recommended,
by the CfSR,
that at a minimum a rest period of
four hours should be included in inputs
when entering work periods.
If the organisation is splitting up
the shifts into separate tasks, where
there is an allocated Low Risk time
of less than 1 hour, then the inclusion
of a Low Risk shift would be more
appropriate for Risk Management than
a short break of non-work.
When saving a
file, FAID informs me that it is unable
to save the file and displays the
filename with a file extension of
.$$$?
This means that either the file is
currently in use by another program,
or that the folder, for the destination
of the file, has write protection
(i.e. read only) applied to it.
To fix for the file in use:
Close the file in use, and
Then try to save the FAID file.
To fix for the Write Protected folder:
Navigate (ie using windows explorer)
to the folder where saving to
Right click - select "Properties"
Unselect the Read Only attribute.
To fix for the Write Protected folder
for VISTA O/S:
From the Program Start Menu find
the FAID® v2 program icon
Right click - select "Properties"
Under the "Compatibility"
tab tick "Run this program
as an administrator"
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